Being a unibody, the X5 has other issues when towing then the typical frame-based vehicle. For example, an F150 will stress at the tranny w/ max tow load where the X5 will stress at every hitch-to-quarter pannel connect point. At 6900lbs your at 115% max load so nothing to worry about; but in theory you could rip an X5 appart with enough load..

That said, I think the X5 may have been the first unibody to support 6000lbs - and that's awesome (also explains why the hitch is a nightmare install ).

Josh

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2005 X5 4.4i, Sport, Premium, Activity/Winter
Prior: '04 M3, '03 330Xi, '01 X5 4.4i
Mods: Bluetooth, iPod, M3 Wheel, Visor LCD glovebox DVD, Boston 12" (sub cavity converted to storage)
To-Do: Springs, exhaust, air filter, re-paint facelift carbon black, 20" wheels, repaint wood trim (maybe)